Chevrolet Silverado / GMC Sierra. Manual - part 926
Fig. 290: Removing 1-2-3-4, 4-5 Clutch Housing Tone Wheel
Courtesy of GENERAL MOTORS CORP.
2. Position the 1-2-3-4, 4-5-6 clutch housing (2) on a press so that the front of the housing is
down.
3. Install J 43768 (1) onto the tone wheel (3). See Special Tools.
4. Using J 43768 (1), press the tone wheel (3) from the 1-2-3-4, 4-5-6 clutch housing (2). See
Special Tools.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Installation Procedure
Fig. 291: Installing Tone Wheel Onto 1-2-3-4, 4-5 Clutch Housing
Courtesy of GENERAL MOTORS CORP.
1. Position the 1-2-3-4, 4-5-6 clutch housing (3) on a press so that the front of the housing is
facing up.
2. Align the tone wheel (2) so that the outside edge is facing up.
3. Install the tone wheel (2) onto the 1-2-3-4, 4-5-6 clutch housing.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
4. Install J 43768 (1) onto the tone wheel. See Special Tools.
5. Using J 43768 (1), press the tone wheel onto the 1-2-3-4, 4-5-6 clutch housing. See Special
Tools.
Fig. 292: Staking 1-2-3-4, 4-5 Clutch Housing
Courtesy of GENERAL MOTORS CORP.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
6. Locate 4 positions on the 1-2-3-4, 4-5-6 clutch housing (3), 90 degrees apart from each
other, that have not been previously staked.
7. Install J 43767 onto the 1-2-3-4, 4-5-6 clutch housing with the 2 staking prongs at 2 of the 4
staking positions. See Special Tools.
8. Install J 43768 (1) onto J 43767 (2). See Special Tools.
9. Stake the tone wheel to the 1-2-3-4, 4-5-6 clutch housing.
10. Remove the J tools and repeat steps 7-9 at the remaining 2 staking positions.
11. Remove the J tools.
1-2-3-4 CLUTCH FIBER PLATE INSPECTION
NOTE:
Stake the tone wheel to 9 tons. The accuracy of the pressure
gauges on presses varies. Start at a lower pressure and
increase to 9 tons. Too great a pressure will distort the tone
wheel. Too little pressure will result in stakes that will not
hold.
IMPORTANT: If necessary, tap J 43768 and J 43767 to remove the tools
from the 1-2-3-4, 4-5-6 clutch housing. See Special Tools.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado